This standard specifies the methods for conducting laboratory tests to determine the physical and mechanical properties of wood-based structural sandwich construction panels. It provides procedures for evaluating density, water absorption, compressive strength, tensile strength, shear strength, and flexural characteristics.
Methods of Test for Wood-based Structural Sandwich Construction
Quick Reference Values
Conditioning of test specimensConditioned to constant mass in an atmosphere of 65 ± 5% relative humidity and 27 ± 2°C temperature
Key Formulas
Bending Strength (σ) = (P_max * L) / (4 * Z) — For three-point bending test
Apparent Modulus of Elasticity (E) = (P * L³) / (4 * b * h³ * y) — From bending test
Shear Strength (τ) = P_max / A — Force per unit area in shear test
Practical Notes
Proper conditioning of test specimens as per Clause 3.2 is crucial for obtaining accurate and comparable results.
The test methods are intended for material characterization and quality control, not for testing full-scale assembled structures.
The orientation of the specimen with respect to the panel's grain or manufacturing direction can significantly affect test results and must be recorded.